xcode4.2 用 empty 模板 建 Nav

虽然xcode4.2已经带了自己的Master-Detail Application，但跟书上的都不一样

可书上还在用MainWindow.xib，这个已经不合适使用了。

 

新建一个空模板，然后新建UIViewController subclass，FirstLevelViewcontroller， 勾选 with xib

 

然后在代理类中，修改

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    /*
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
     */
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.rootViewController = [[[FirstLevelViewcontroller alloc] initWithNibName:@"FirstLevelViewcontroller" bundle:nil] autorelease];
    self.window.rootViewController = self.rootViewController;
    [self.window makeKeyAndVisible];
    return YES;
}

在FirstLevelViewcontroller的Object上，拖入